20Pcs 6-7mm Diamond Coated Hole Saw Drill Bits Set for Glass Ceramic Tile Marble
7mm(9/32" ) 7.2mm 5mm 6-6.5mm 1.1mm 50mm 20mm 20PCS. Excellent for making clean and accurate hole on glass, tile, granite and marble. 6mm(1/4" ) 6.2mm 4mm 5-5.5mm 1.1mm 50mm 20mm 20PCS. The Diamond Hole Saw Does NOT Have Center Pilot Drill.